Hackster is hosting Hackster Holidays, Finale: Livestream & Giveaway Drawing. Watch previous episodes or stream live on Tuesday!Stream Hackster Holidays, Finale on Tuesday!
MyEngineeringStuffs
Published © GPL3+

Serial Communication between NodeMCU and Arduino

Serial Communication between ESP2866-12 (NODE-MCU) and Arduino to increase the number of analog pins as my primary work.

BeginnerShowcase (no instructions)2 hours144,789
Serial Communication between NodeMCU and Arduino

Things used in this project

Hardware components

Arduino UNO
Arduino UNO
Arduino MEGA can be used.
×1
NodeMCU ESP8266 Breakout Board
NodeMCU ESP8266 Breakout Board
×1
DHT11 Temperature and Humidity Sensor
DIYables DHT11 Temperature and Humidity Sensor
×1
Jumper Wires
DIYables Jumper Wires
×6
USB Cable 2.0 Type A/B for Arduino Uno
DIYables USB Cable 2.0 Type A/B for Arduino Uno
×1

Software apps and online services

Arduino IDE
Arduino IDE
Arduino IDE with ESP board manager.
adafruit.io

Story

Read more

Schematics

Arduino and Node MCU circuit

Arduino and Node MCU circuit

Code

Arduino_Code.ino

C/C++
#include <dht.h>
dht DHT;
int temp,humi;
#define DHT11_PIN A0
String str;
void setup(){
 Serial.begin(115200);
 Serial1.begin(115200);
 Serial.print(char(169)); // Copyright Symbol
 Serial.println(" Myengineeringstuffs.com");
 delay(2000);
}
void loop()
{
  DHT.read11(DHT11_PIN);
  humi=DHT.humidity;
  temp=DHT.temperature;
  Serial.print("H: ");
  Serial.print(humi); 
  Serial.print("% ");
  Serial.print(" T: ");
  Serial.print(temp); 
  Serial.print(char(176));
  Serial.println("C");
  str =String('H')+String(humi)+String('T')+String(temp);
  Serial1.println(str);
  delay(5000);
}

Node-MCU-Side.ino

C/C++
void setup() {
  // Open serial communications and wait for port to open:
  Serial.begin(115200);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }
}

void loop() { // run over and over
  if (Serial.available()) {
    Serial.write(Serial.read());
  }
}

Credits

MyEngineeringStuffs
13 projects • 71 followers
I 😍 to help people, students are always FIRST, and Yes👉https://paypal.me/pawanbehera1 you can buy me a COFFEE if U😍 my WORK, NAMASTE 🙏

Comments

Related channels and tags
  • Adafruit
  • Arduino
  • DIYables
  • Espressif
  • NodeMCU